Finding the Fourth Proportional to 78,363.93, 108,139.14 and 42,553.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,363.93 : 108,139.14 = 42,553.02 : x
2. Step 2: Convert to fraction form
   78,363.93/108,139.14 = 42,553.02/x
3. Step 3: Cross multiply
   78,363.93x = 108,139.14 × 42,553.02
4. Step 4: Simplify right side
   78,363.93x = 4,601,646,987.20
5. Step 5: Solve for x
   x = 4,601,646,987.20/78,363.93
6. Step 6: Final answer
   x = 58,721.49